After purchasing a Mark2 that dumped garbage and locking up my QEDX, I purchased the Mk3 board. After the upgrade, the transport sounded dull and two dimensional the first 100 hours. It didn’t even compete against my lowly Oppo. However it open up after an extensive burn-in with XLO track. Even so, if I power down this Jay a couple of weeks, it will take a few hours of playing to weak up. This applies to my unit and in my system. Mileage may varies with yours.
Mosler666